Gear-cover for railway-heads.



No. 643,53l. Patented Feb. I3, I900. L. W. PENNEY.

GEAR COVER FOR RAILWAY HEADS.

(Application filed May 4, 1899.)

2 Sheets$heet L (No Model.)

Nu. 643,53l. Patented Feb. l3; I900. L. W. PENNEY.

GEAR COVER FOR RAILWAY HEADS.

(Application filed May 4, 1899.) (No Model.) 2 Sheets-Sheet z,

UNITED STATES PATENT OFFIcE.

LORI-EN W. PENNEY, OF NEWTON, MASSACHUSETTS, ASSIGNOR TO THE SAOOdz PETTEE MACHINE SHOPS, OF SAME PLACE.

GEAR-COVER FOR RAILWAY-HEADS.

SPECIFICATION formingpart of Letters liatent No. 643,531, dated February 13, 1900.

Application filed May 4, 1899. Serial No. 715,537. (No model.)

To aZl whom it may concern.- 7

Be it known that I, LOREN W. PENNEY, of Newton Highlands, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Greai Covers for Railway-Heads and Fiber-Treating Machines of a Similar Nature, of which the following is a description sufliciently full, clear, and exact to enable those skilled in the art to which it appertains or with which it is most nearly connected to make and use the same.

This invention has relation to gear-covers for the calendering-rolls or rolls of a similar nature in fiber treating machines and to means for causing one roll to bear against the other of a pair, so as to cause them to press with the requisite degree of energy upon the material passing through them.

In the use of calendering-rolls it is necessary in order to secure the best results that the bosses of the pair should be pressed or made to bear upon each other with quite an appreciable degree of energy or force. Where the pair of calendering-rolls are arranged with one in position above the other the weight of the top roll is generally sufficient to cause the rolls to bite the material passing through them with the requisite degree and regularity of tension or force; but in cases, such as the present, where the rolls are arranged side by side the weight of the rolls for the purpose mentioned is not capable of full utilization. In some cases springs have been employed in such manner as to press separately or independently upon the journal-boxes of the rolls; but in this case if the sliver should happen to be out of center with respect to the length of the rolls and from other causes the rolls would rock thereon and move unsteadily.

It is the purpose of my invention to not only weight the gear-cover, so as to obviate the necessity of using springs, but to connect at least two gear-covers by a bar extending along the front and loosely hinging it at the rear, so that the weighted cover will have a steadying effect on the calendering-rolls and prevent the rocking which takes place where the ends are held down independently by separate weights or springs. It will be unboss of rolls.

derstood that where the front edge of the covers are connected byabar, as stated, and they have a bearing, as is proposed by me, at their rear corners when the front, which bears upon the journals of the rollers, is raised neither the cover nor the rollers will have a tendency to rock longitudinally, but will be prevented from so doing, and the roll' ers especially will be held steadily by the cover and without rocking upon the sliver passing between them. To these ends I construct the gear-covers as weights for the roller-journals, in addition to forming them so that they will perform their usual functions, and provide them with features which cause their weight to be exerted upon the movable journal-bearings or equivalent elements or features of the construction, with the result hereinbefore indicated.

The invention also consists of connecting two or more gear-covers in such manner as to not only increase their weight upon the journals of the rolls, as stated, but enhance their servieeability in other respects and render them more ready of manipulation than heretofore.

Reference is to be had to the annexed drawings and to the letters marked thereon, forming a part of this specification, the same letters designating the same parts or features, as the case may be, wherever they occur.

Of the drawings, Figure 1 is a plan view of one form of the invention suited for use upon a single delivery or across a single length or Fig. 2 is a similar view of what is shown in Fig. l in reversed or upside-down position. Fig. 3 is a vertical sectional view taken through the center of the connecting part of the cover and of the roll-clearer from front to rear and a portion of the machine with which they cooperate. Fig. 4 is a similar view taken on a line showing how the cover is employed so as to bear upon the journalbox of a roll and make the boss of one roll bear upon the other, as shown in Fig. 3. Fig. 5 is a diagram showing how my improved weighted cover may be utilized upon a plurality of deliveries of rolls or across several lengths or bosses. Fig. 6 is a vertical sectional view at the rear of the calender-rolls, the roll-cover being removed.

In the drawings, a designates the frame of the machine.

I) designates drawing-rolls, and 0 (Z designate the calendering-rolls, which are shown as arranged side by side in contradistinction to the arrangement of the drawing-rolls where one of each pair is shown as in position above the other. The journal box or bearing 6 for the roll d is shown in Fig. 3 as loose and as bearing on an incline f, sloping toward the j ournal-bearing for the roll 0, so that the weight of the former roll will crowd it toward or force it upon the latter.

9 g designate the covers which extend over the gears and journals of the rolls and which are cast or otherwise formed with as much metal in their construction as is feasible or convenient in order to add to their weight. To add to this latter end, I connect two or more gear-covers at their front ends with a bar h, which may be made, as shown, to extend down in front of the boss of the front roll.

The covers 9 are provided at their rear ends with rectangular (or it may be other shaped) holes i, through which bail-pieces j, turned down and screw-threaded at their ends, pass to receive nuts 70, by which means the covers are given a hinged connection with the roll stand or frame and whereby also the cover may be supported in raised position when its front edge or the connecting-bar h is tipped back beyond the line of equilibrium. This feature of the improvement renders it convenient to manipulate the covers in the operation or use of the machine.

In many instances the cover part 9 does not extend over gears on the rolls or other gears, but over the journals of the rolls, and in the consideration of the terms gear-covers and covers herein contained this fact is to be taken into consideration and is to be construed the same whether the cover part extends over gears and journals or over the journals alone.

The bottom of each of the covers at a proper point is provided with a boss or projection I, which is constructed when the cover is closed down to rest upon the journal-box 6, so as to bring the weight of the cover to bear on the journal and force the boss of the roll (1 against the similar feature of the roll 0, with the result hereinbefore explained.

By connecting the two covers with the bar it I am enabled to add very materially to their weight and so enhance their efficiency in bearing upon the journals and pressing the bosses of the rolls upon each other.

m designates the roll-clearer, which may be supported between the covers over the rolls and which is curved downward over the rear roll, as at n, to prevent the sliver or fibers from catching thereon.

In Fig. 5 I have shown how the improved weighted cover may be connected across several bosses of the rolls and between two or more deliveries.

The essential feature of the invention is the weighting of the covers and the utilization of their weight in pressing the bosses of the calendering-rolls upon each other, whatever the parts 9 may cover.

Having thus explained the nature of the invention and described a way of constructing and using the same, though without attempting to set forth all of the forms in which it may be made or all of the modes of its use, it is declared that what is claimed is 1. The calender-rolls, one of which is provided with movable journal-bearings to per mit the surface of one roll to be pressed upon the other, combined with the gear-cover constructed to rest or bear upon the said movable journal-bearings, substantially as described.

2. The calender-rolls, one of which is provided with movable journal-bearings to permit the surface of one roll to be pressed upon the other, combined with the weighted gearcover substantially as set forth, constructed to rest or bear upon the said movablejonrnalbearings, substantially as described.

3. The calender-rolls, one of which is provided with movable journal-bearings to permit the surface of one roll to be pressed upon the other, combined with the gear-cover provided with the bosses l, constructed to bear upon the said movable jou rn al-bearin gs, substantially as described.

4. The roll and its journal-box, combined with the gear-covers united by the bar h, the

covers being adapted to bear upon the journal-boxes.

5. The roller stand or frame, combined with the gear-covers hingedly connected with the roller stand or frame, as described, and the bar it connecting the covers.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 5th day of April, A. D. 1899.

LOREN IV. PENNEY.

\Vitnesses:

WM. L. THOMPSON, E. W. SABIN. 

